RE: [EnergyPlus_Support] Inserting Exhaust Fan - Severe ** AirflowNetwork:MultiZone:Component:Zon

I think you may miss an AirflowNetwork:MultiZone:Surface object to define “118403 XFan1 WC” as Leakage Component Name. Here are examples to defined ZoneExhaust fans extracted from AirflowNetwork_MultiZone_SmallOffice.idf, one of example input files.

AirflowNetwork:MultiZone:Surface,

Zn003:Wall003, !- Surface Name

Zone3 Exhaust Fan, !- Leakage Component Name

EFacade, !- External Node Name

1.0; !- Window/Door Opening Factor, or Crack Factor {dimensionless}

AirflowNetwork:MultiZone:Component:ZoneExhaustFan,

Zone3 Exhaust Fan, !- Name

0.01, !- Air Mass Flow Coefficient When the Zone Exhaust Fan is Off at Reference Conditions {kg/s}

0.667; !- Air Mass Flow Exponent When the Zone Exhaust Fan is Off {dimensionless}

ZoneHVAC:EquipmentList,

Zone3Equipment, !- Name

AirTerminal:SingleDuct:Uncontrolled, !- Zone Equipment 1 Object Type

Zone3DirectAir, !- Zone Equipment 1 Name

1, !- Zone Equipment 1 Cooling Sequence

1, !- Zone Equipment 1 Heating or No-Load Sequence

Fan:ZoneExhaust, !- Zone Equipment 2 Object Type

Zone3 Exhaust Fan, !- Zone Equipment 2 Name

2, !- Zone Equipment 2 Cooling Sequence

2; !- Zone Equipment 2 Heating or No-Load Sequence

Fan:ZoneExhaust,

Zone3 Exhaust Fan, !- Name

FanAndCoilAvailSched, !- Availability Schedule Name

0.7, !- Fan Efficiency

500, !- Pressure Rise {Pa}

0.01, !- Maximum Flow Rate {m3/s}

Zone3 Exhaust Node, !- Air Inlet Node Name

Zone3 Exhaust Fan Outlet Node, !- Air Outlet Node Name

Zone Exhaust; !- End-Use Subcategory

ZoneHVAC:EquipmentConnections,

NORTH ZONE, !- Zone Name

Zone3Equipment, !- Zone Conditioning Equipment List Name

Zone3Inlets, !- Zone Air Inlet Node or NodeList Name

Zone3 Exhaust Node, !- Zone Air Exhaust Node or NodeList Name

Zone 3 Node, !- Zone Air Node Name

Zone 3 Outlet Node; !- Zone Return Air Node Name

Hope this helps.

Lixing

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Linda Lawrie
Sent: Friday, August 12, 2011 7:21 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Inserting Exhaust Fan - Severe ** AirflowNetwork:MultiZone:Component:Zon

If you send your entire input file to the helpdesk, we can try to help.

At 02:23 AM 8/12/2011, Jean marais wrote:

Please HELP

Severe ** AirflowNetwork:MultiZone:Component:ZoneExhaustFan = 118204 XFAN1 WC is defined and never used.

ZoneHVAC:EquipmentConnections,
    118403,                  !- Zone Name
    118403Equipment,         !- Zone Conditioning Equipment List Name
    118403 Zone Equip Inlet, !- Zone Air Inlet Node or NodeList Name
    118403 WC Exhaust Air Nodes List,                        !- Zone Air Exhaust Node or NodeList Name
    118403 Zone Air Node,    !- Zone Air Node Name
    118403 Return Outlet;    !- Zone Return Air Node Name

NodeList,
    118403 WC Exhaust Air Nodes List,
    118403 WC Exhaust Air Node1; !- Node ID

AirflowNetwork:MultiZone:Surface,
    R_118403_5_0_0,   !- Surface Name
    118403 WC,         !- Leakage Component Name
    118403 Horizontal,                 !- External Node Name
    1.0;                     !- Window/Door Opening Factor, or Crack Factor {dimensionless}

!Node Required per Surface
   AirflowNetwork:MultiZone:ExternalNode,
    118403 Horizontal,!- Name
    5.00,                    !- External Node Height {m}
    HorizontalWPC;!- Wind Pressure Coefficient Values Object Name

AirflowNetwork:MultiZone:Surface:EffectiveLeakageArea,
    118403 WC,               !- Name
    0.002,                   !- Effective Leakage Area {m2}
    1.0,                     !- Discharge Coefficient {dimensionless}
    4.0,                     !- Reference Pressure Difference {Pa}
    0.667;                   !- Air Mass Flow Exponent {dimensionless}

AirflowNetwork:MultiZone:Component:ZoneExhaustFan,
118403 XFan1 WC, !- Name
0.01, !- Air Mass Flow Coefficient When the Zone Exhaust Fan is Off at Reference Conditions {kg/s}
0.667; !- Air Mass Flow Exponent When the Zone Exhaust Fan is Off{dimensionless}
ReferenceCrackConditions; !- Reference Crack Conditions

ZoneHVAC:EquipmentList,
    118403Equipment,         !- Name
    AirTerminal:SingleDuct:Uncontrolled, !- Zone Equipment 1 Object Type
    118403AirTerminal:SingleDuct:Uncontrolled, !- Zone Equipment 1 Name
    1,                       !- Zone Equipment 1 Cooling Sequence
    1,                                                       !- Zone Equipment 2 Heating or No-Load Sequence
    Fan:ZoneExhaust,                                         !- Zone Equipment 2 Object Type
    118403 XFan1 WC,                            !- Zone Equipment 2 Name
    2,                                                       !- Zone Equipment 2 Cooling Sequence
    2;

    !!!!!!!!!!!!!!!Exhaust Fan WC Start

Fan:ZoneExhaust,
    118403 XFan1 WC,     !- Name WC Exhaust Fan
    HVACTemplate-Always 1,   !- Availability Schedule Name
    0.7,                     !- Fan Efficiency
    142,                     !- Pressure Rise {Pa}
    0.0166666,            !- Mech ventilation (m3/s)      60 m³/h
    118403 WC Exhaust Air Node1,   !- Air Inlet Node Name
    118403 WC Outside Node1, !- Air Outlet Node Name
    WC Exhaust;         !- End-Use Subcategory
!!!!!!!!!!!!!!!Exhaust Fan WC End

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